bolton



(No Model.) 2 SheetsSheet 1.

A. S. & T. BOLTON.

APPARATUS FOR DRAWING WIRE.

No. 397,272. Patented Feb. 5, 1889.

Wiineavea: 5;

u. rrrzns. Phvlo-Lilhonnphcn Washington. a. c.

(No Model.) 2 Sheeies-Sheet 2. A. S. & T. BOLTON.

APPARATUS FOR DRAWING WIRE.

No. 397,272. Patented Feb. 5, 1889.

N. PETERS. PholoLiflmgr-lpfm. Wahingwn. n. c.

UNTTE STATES PATENT SFFICE.

ALFRED S. BOLTON AND THOMAS BOLTON, OF OAKAMOOR MILLS, NEAR CHEADLE,COUNTY OF STAFFORD, ENGLAND.

APPARATUS FOR DRAWING WIRE.

SPECIFICATION forming part of Letters Patent No. 397,272, dated February5, 1889.

Application filed September 1'7, 1888. Serial No. 285,606. (No model.)Patented in England June 6, 1887, No. 8,133; in France July 21, 1887.No. 184,923, and in Belgium July 25,1887,NOH78,343.

To all whom it may concern.-

Be it known that we, ALFRED Sonrnr. BoL- TON and THOMAS BOLTON, copperand brass manufacturers, both of Oakanioor Mills, near Gheadle, in thecounty of Stafford, England, have invented a certain new and usefulImprovement in Apparatus for Drawing Wire, (for which we have obtainedpatents in England,No.-8,l33, dated June 6,1887; in France, No. 184,923,dated July 21, 1887, and in Belgium, No. 78,3i3, dated July 25,1887) ofwhich the following is a specification.

This invention is more particularly intended for performing a process ofdrawing wire in which the varying rates of draft to suit the elongationof the wire are attained automatically, reliance being bad on the slipof the wire on the blocks or imllingsurfaces by which the wire is drawnthrough the successive dies, as described in our application for UnitedStates Letters Patent, Serial No. 242,725, filed June 28,1887. Wenowpropose, in carrying out such a process, instead of arranging the diesin each draw-bench one behind the other in a line and interposingbetween them driven blocks or pulleys, as described in ourabove-mentioned patent, to arrange the dies in a group, the number ofdies in the group depending on the nature of the material to be drawn,and instead of a series of blocks, we provide a driven shaft or cylintional elevation, taken in the line] 2 of Figs.

1 and 2, showing the course of the wire through the drawing apparatus.Fig. 4. is a plan view, and Fig. 5 a side elevation, of a commondraw-bench arranged to work according to our invention.

A, Figs. 1, 2, and 3, is a bench having two levels and resting uponsuitable under framing. Fitted to the lower level of this bench is alubricating-trough, B, in which runs the draft-drum 0, (represented inthis example of my invention as a cylinder,) the same being fitted to orforming part of a shaft, 0, which turns in plumber blocks carried by thebench. Keyed to this shaft is a pulley, C for driving the spindle of thefinishing or take-up drum D.

E E are two transverse bars supported by standards E Their use is tocarry groups of dies a, varying in number according to the size of thewire to be drawn and the material to be operated upon. The drawingsshowten dies, that being a suitable number for drawing copper or brasswire. These dies are, it will be seen, arranged in two parallel lines,the dies of the one row being set opposite the spaces of the other row.

F is a reel supported 011 a stud fixed to the bench and serving to carrythe wire to be drawn. G is a guide-bar standing in front or forward ofthe die-bars, for the purpose to be presently explained.

The cylinder C serves to draw the wire through all the dies but the lastof the series.

The wire taken from the reel F is passed under or lapped around thecylinder O, which is partially immersed in a suitable lubricant in thetrough B. The wire then passes forward to the guide-bar G, around whichit is lapped to bring it opposite the first of the series of diescarried by the die-bar E, to receive the first drawing. The wire thencepasses through an opening in the die-bar E back to the cylinder O,around which it is lapped one or more times to enable the cylinder totake a firm bite of the wire. From the cylinder the wire is led forwardagain to the guide-bar G, whence it passes back (through an opening in.the die-bar E) to the first of the second series of dies carried by thedie-bar E, and so to the driven cylinder, as before, to be again in likemanner led over the guide-bar G and passed to the third or nextsucceeding die. I11 this way each die of the series is brought to actupon the wire in turn,the cylinder giving the wire the requisite draftn11- til it reaches the last die of the series, 6*. This die has anindependent supportsituate in too surface speed imparted by this band tothe 5 cylinder C willbe equal to or in excess of the maximum rate oftravel intended to be imparted to the wire, and the like surface speed iwill be imparted to the finishing or take-up 3 drum, which completes thedrawing of the wire.

It will be observed that the surface speed of the drunror cylinder (3being sufficient to etl'ect the drawing of the wire through the last diebut one of the series, where the wire has been elongated to nearly themaximum length, the said speed is more than sufticient to effect thedrawing through the preceding dies of the series. This excess of speedis cmnpensated for by the slip of the wire on the drum or cylinder.

A band from the pulley passes down to and under gnide-pulleys and thence-to the pulley I) on the spindle 1) of the take-up drum D. \Vhen a groupof machines is arranged according to our invention, the spin dies of thetak e-up drum may all be driven from a vertical spindle placed at theback of the continuous bench, thus enabling the drafteylinder andlubricatingtrough to be continuous for several machines.

To throw the draw-bench out of action, we provide (when driving thetake-up drum by friction of contact) means for lifting the drum out ofclose contact with its coned spindle, which will then rotate withoutacting upon the drum. For this purpose we mount imme diately below thedrum'D an eccentric, D, the pin of which is carried by a short standardon the bench and is fitted with a hand-lever. liy turning this eccentricto bring its longer radius under the drum the drum will be lifted on itseoned spindle, and thereby raised out of frictional contact therewith.If thought desirable, we may use a draft-driun of conical form, insteadof one of cylindrical form, to effect the draft of the wire through thedies, their diameter increasing in proportion to the elongation of thewire.

In adapting our invention to draw-benches of the common construction weemploy the arrangement shown at Figs. 4- and In these figures, A is thebench or framing. U is the draft-drum, which is of conical form, like anordinary wire-block, driven in the usual manner from a longitudinalshaft below the bench and fitted with miter-wheels, which gear intomiter-wheels carried by the shafts C D. D is another such conical drumor wireblock mounted on the shaft D and constituting the take-up drum.I1 is a reel mounted upon a stud-axle standing up from the bed of thedrau bench. Between the draft-drum O and the reel F we insert astandard, E, which is bolted firmly to the bench and serves to carnv agroup of (lies, 6, of which live are shown, but which may vary in numberaccording to the depth of the draft-drn m used. and the number of draftsdesired to be given to the wire. These dies are set one above another ina vertical line corresponding to the position of the draft-drum. t, andbetween the group of dies and the reel :1 vertical guidebar, t}, is setup for directing the course of the wire under treatment. \Vhen it isdesired to employmo'rc dies than can be placed in a vertical positionwithin the depth of the draftd rum, two upright die-holders andguide-bars may be used, after the manner of the horizontal arrangementof Figs. 1, 2, and 3. 0* is the last or finishing die set between thedraftdrum (1 and the take-up drum 1), but to one side thereof, or in aline drawn from the periphery of the cylimlcr to that of the take-updrum. In working with a draw'beneh thus arranged the wire is led fromthe reel l past the guide-bar G, preferably to the uppermost die 6whence it passes to the draft-drum around which it is lapped. The wirethen returns to the guidebar G and passes through the second die 6 ofthe set, thence to the draftdrum, as before, and back to the guide-bar.In this way it is led through all. the dies e of the set, and passes(wentually from the drum C to the finishing-die 0*, and thence 'to thetake-u p drum 1).

Having now descrilwd our invention, we declare that we claim-- I. In awire-drawing a 'iparatus, a row or rows of dies arranged betwvecn andparallel with a fixed guide-bar and a rotary draft cylinder or drum,such cylinder or drum serving to impart to the wire under treatmentratesof draft varying with the elongation of the wire, as and for the purposeabove described.

2, In a wire-drawing apparatus, a row or rows of dies arranged betweenand parallel with a fixed guide-bar and a rotary draft cylinder ordrum,in combination with a lubricating-trough into which the draft cylinderor drum dips for the purpose of lubricating the passing wire undertreatment preparatory to each successive drawing ALFRED S. BOLTON. THOS.BOLJON. 'Wi tn esses i M. Coornn, I. IV. RowBo'rrL-uu, Clerks withilIcssrs. .Moody (if l V oolley, So-

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